The Screw,machine, cataloged under National Stock Number 5305-01-538-4173, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. Government technical data includes 18 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-538-4173 |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| Head Height | 0.068 INCHES NOMINAL IN |
| Locking Feature Material Document and Classification | MIL-F-18240 MIL SPEC SINGLE MATERIAL RESPONSE |
| Screw Surface Treatment | ALUMINUM |
| Fastener Length | 0.625 INCHES NOMINAL IN |
| Screw Material Document and Classification | AMS 4928 NATIONAL SPEC SINGLE MATERIAL RESPONSE OR AMS 4967 NATIONAL SPEC SINGLE MATERIAL RESPONSE |
| Thread Length | 0.557 INCHES NOMINAL IN |
| Locking Feature Material | PLASTIC POLYAMIDE NYLON |
| Nominal Thread Diameter | 0.164 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Locking Feature | PATCH |
| Screw Material | TITANIUM ALLOY UNS R56400 |
| Minimum Tensile Strength | 1950 POUNDS PER SQUARE INCH LBS |
| Internal Drive Style | TORQUE SET |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| Thread Series Designator | UNJC |
| Head Diameter | 0.270 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| NAS1189V08T10AB | 3/2 Design control — primary reference U.S. Government activity |
NSN 5305-01-538-4173 is a Screw,machine, classified under FSC 5305, Screws. Status: active.
Key specifications for 5305-01-538-4173: Head Height: 0.068 INCHES NOMINAL IN; Locking Feature Material Document and Classification: MIL-F-18240 MIL SPEC SINGLE MATERIAL RESPONSE; Screw Surface Treatment: ALUMINUM; Fastener Length: 0.625 INCHES NOMINAL IN. 18 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.